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Winbond Electronics Corporation W25Q256JVEJQ TR
- Part No.:
- W25Q256JVEJQ TR
- Manufacturer:
- Winbond Electronics Corporation
- Category:
- Memory
- Package:
- 8-WDFN Exposed Pad
- Datasheet:
-
W25Q256JVEJQ TR.pdf
- Description:
- IC FLASH 256MBIT SPI/QUAD 8WSON
- Quantity:
- Payment:
- Shipping:
Inventory:4,248
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Product details
Overview
W25Q256JVEJQ TR from Winbond is a 256M-bit (32MB) serial NOR flash memory IC supporting standard, dual, and quad SPI interfaces with 133MHz clock rate, 4KB uniform sector architecture, and industrial-grade -40°C to +85°C operation. It enables XIP (execute-in-place) code execution, firmware storage, and parameter retention in space-constrained embedded systems.
For engineers reviewing the W25Q256JVEJQ TR datasheet, W25Q256JVEJQ TR pinout, W25Q256JVEJQ TR application, or W25Q256JVEJQ TR equivalent, this page delivers verified pin functions, JEDEC-compliant ID support, 4-byte addressing capability, Quad Enable (QE) bit control, and hardware /WP and /HOLD protection - all critical for boot loader integration, secure firmware update, and low-pin-count MCU interface design.
Technical Context
The W25Q256JVEJQ TR implements a hierarchical erase architecture with 8,192 × 4KB sectors and 512 × 64KB blocks, enabling granular firmware partitioning and field-upgrade resilience. Its status register set includes volatile/non-volatile BP bits, QE bit (SR2), ADS/ADP address mode flags, and DRV0/DRV1 output drive strength controls - all accessible via SPI instructions like 01h/31h/11h.
It supports full instruction compatibility across 3- and 4-byte address modes: B7h/E9h toggle address width, while C5h/C8h manage extended address register. Dual/Quad I/O modes require IO0–IO3 reconfiguration via QE=1, repurposing /WP and /HOLD as IO2/IO3 - a behavior validated for WSON 8x6-mm (Package Code E) per datasheet Figure 1a and Section 3.1–3.2.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Memory Density | 256 M-bit (32 MB), organized as 131,072 × 256-byte pages |
| Interface Support | Standard/Dual/Quad SPI with 133 MHz max CLK; 532 MHz effective quad throughput |
| Erase Granularity | Uniform 4 KB sectors, 32 KB blocks, 64 KB blocks, and full-chip erase |
| Operating Voltage | 2.7 V to 3.6 V single supply; <1 µA typical power-down current |
| Temperature Range | -40°C to +85°C (Industrial Grade), qualified per AEC-Q100 stress test conditions |
| Endurance & Retention | 100,000 program/erase cycles per sector; >20 years data retention at 55°C |
| Security Features | 64-bit unique ID, three 256-byte OTP-lockable security registers, SFDP v1.6 compliant |
Pinout & Package
W25Q256JVEJQ TR uses the 8-pad WSON 8×6-mm package (Package Code E), with exposed thermal pad. Pin functions are defined per datasheet Section 3.1–3.2 and Figure 1a.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| /CS | Chip Select Input | Active-low enable; high-impedance DO during deselect; required high-to-low transition before instruction acceptance |
| DO (IO1) | Data Output / Bidirectional I/O1 | Unidirectional output in Standard SPI; bidirectional in Dual/Quad SPI; falls on CLK falling edge |
| /WP (IO2) | Write Protect Input / Bidirectional I/O2 | Active-low hardware lock for status register; becomes IO2 when QE=1 in Quad SPI mode |
| GND | Ground Reference | Primary return path for VCC and I/O signals; must be low-impedance for timing integrity |
| DI (IO0) | Data Input / Bidirectional I/O0 | Unidirectional input in Standard SPI; bidirectional in Dual/Quad SPI; rises on CLK rising edge |
| CLK | Serial Clock Input | Master-generated timing signal; supports SPI Mode 0 and Mode 3; max 133 MHz frequency |
| /HOLD (IO3) | Hold Input / Bidirectional I/O3 | Pauses active transaction when low; becomes IO3 when QE=1; not available in Quad mode if /RESET used |
| VCC | Power Supply | 2.7–3.6 V supply; decoupling capacitor required within 10 mm of pin per layout guidelines |
Key Features
| Feature | Design Value |
|---|---|
| Quad Enable (QE) Bit Control | Status Register-2 bit enables IO2/IO3 reassignment and unlocks 532 MHz quad read performance |
| Erase/Program Suspend & Resume | Allows background interrupt handling during long erase/program operations without data loss |
| 4-Byte Address Mode Support | Enables full 256M-bit addressing via B7h/E9h commands and C5h/C8h extended register access |
| Hardware Write Protection | /WP pin + BP bits provide layered protection against accidental firmware overwrite or corruption |
| JEDEC & SFDP Compliance | 9Fh JEDEC ID, 5Ah SFDP register, and 4Bh Unique ID ensure interoperability with standardized flash controllers |
Applications
| Boot Code Storage | Firmware Over-the-Air (OTA) Update |
|---|---|
Use Scenario: Storing primary bootloader and initial firmware image for ARM Cortex-M or RISC-V microcontrollers during cold start. IC Role / Device Role / Timing Role: Non-volatile code storage with XIP-capable Quad SPI interface enabling direct CPU instruction fetch without RAM copy. Use Value: Reduces system BOM by eliminating parallel NOR flash; 133 MHz Quad SPI achieves >66 MB/s sustained read, cutting boot time by ≥40% vs. standard SPI. |
Use Scenario: Securely storing delta patches and full firmware images for wireless updates in IoT gateways and industrial PLCs. IC Role / Device Role / Timing Role: Dual-bank partitioned memory with sector-level write protection, allowing atomic swap between active/inactive firmware banks. Use Value: Enables fail-safe rollback using 4KB sector granularity and hardware /WP lock; 100K endurance ensures ≥10 years of daily OTA cycles. |
| Configuration & Calibration Data | Secure Identity Storage |
Use Scenario: Retaining device-specific calibration coefficients, sensor offsets, and user preferences across power cycles in medical instruments. IC Role / Device Role / Timing Role: Parameter storage with individual sector locking (36h/39h instructions) and SRP-controlled status register write protection. Use Value: Prevents unauthorized modification via /WP pin + BP bits; 20-year data retention guarantees accuracy over product lifetime without battery backup. |
Use Scenario: Storing cryptographic keys, device certificates, and one-time-programmable (OTP) identifiers in automotive telematics modules. IC Role / Device Role / Timing Role: Secure non-volatile storage using three 256-byte OTP-lockable security registers and 64-bit unique serial number (4Bh). Use Value: Meets ISO/SAE 21434 threat mitigation requirements; OTP locks prevent post-deployment key extraction or cloning. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar serial NOR flash memory applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| MX25L25645GMI-10G | 256M-bit, 104 MHz max CLK, SOIC-16 package only; no /HOLD pin; supports only 3-byte addressing | Lacks 4-byte addressing and Quad I/O; limited to legacy SPI controllers without extended address support | Select when board layout uses SOIC-16 and system firmware does not exceed 128M-bit address space |
| S25FL256SAGMFI000 | 256M-bit, 133 MHz, supports HyperBus interface in addition to SPI; TFBGA24 package; includes ECC engine | Higher pin count, requires HyperBus controller or SPI-to-HyperBus bridge; ECC adds latency but improves reliability in high-radiation environments | Select when system demands built-in error correction or future HyperBus migration path |
Compared with MX25L25645GMI-10G and S25FL256SAGMFI000, W25Q256JVEJQ TR delivers optimal balance of quad-speed performance, 4-byte addressing readiness, and WSON8 packaging - making it ideal for new designs requiring compact footprint, XIP efficiency, and field-upgrade flexibility without added interface complexity or cost overhead.
Availability
W25Q256JVEJQ TR is available at Aetrix Electronics and suitable for industrial control systems, automotive infotainment head units, and medical diagnostic equipment requiring stable component supply, long-term lifecycle assurance, and RoHS-compliant sourcing.
Supply support for W25Q256JVEJQ TR includes scheduled delivery planning, volume procurement assistance, BOM continuity management, traceable sourcing, and lifecycle availability coordination for OEM customers, industrial embedded developers, connected-device designers, and electronics production programs.
Manufacturer
Winbond Electronics is a Taiwan-based semiconductor company specializing in specialty memory solutions, including serial flash, mobile DRAM, and code storage devices for embedded and industrial markets.
The W25Q series targets high-reliability embedded applications demanding fast boot, secure firmware storage, and minimal PCB real estate - with W25Q256JVEJQ TR optimized for industrial temperature operation and SPI interface scalability.
FAQ
What is the package type and pin count of W25Q256JVEJQ TR?
W25Q256JVEJQ TR uses an 8-pad WSON 8×6-mm package (Package Code E) with exposed thermal pad. It has eight terminals: /CS, DO (IO1), /WP (IO2), GND, DI (IO0), CLK, /HOLD (IO3), and VCC. This compact footprint supports high-density PCB layouts while maintaining thermal performance for industrial ambient conditions.
Does W25Q256JVEJQ TR support 4-byte addressing, and how is it enabled?
Yes, W25Q256JVEJQ TR supports 4-byte addressing via the B7h (Enter 4-Byte Address Mode) and E9h (Exit 4-Byte Address Mode) instructions. The ADP bit in Status Register-2 determines power-up default address mode. When ADP=1, the device powers up in 4-byte mode; ADP is non-volatile and programmable via Write Status Register-2 (31h) instruction.
How does the Quad Enable (QE) bit affect pin functionality on W25Q256JVEJQ TR?
The QE bit (bit 1 of Status Register-2) must be set to 1 to enable Quad SPI operation on W25Q256JVEJQ TR. When QE=1, the /WP pin becomes IO2 and the /HOLD pin becomes IO3. This reassignment is mandatory for Fast Read Quad I/O (EBh) and Quad Input Page Program (32h) instructions. QE is non-volatile and persists across power cycles unless explicitly cleared.
What is the endurance rating and data retention specification for W25Q256JVEJQ TR?
W25Q256JVEJQ TR guarantees a minimum of 100,000 program/erase cycles per 4KB sector and greater than 20 years of data retention at 55°C. These specifications are validated per JEDEC JESD22-A117 stress testing and apply across the full industrial temperature range (-40°C to +85°C), ensuring long-term reliability in unattended embedded deployments.
Is hardware reset (/RESET) available on W25Q256JVEJQ TR?
No, W25Q256JVEJQ TR does not include a dedicated /RESET pin. The /RESET function is only available on SOIC-16 (Package Code F) and TFBGA (Package Codes B/C) variants. W25Q256JVEJQ TR uses the 8-pad WSON package (Code E), which implements /HOLD on pin 7 - not /RESET. System-level reset must be handled by the host MCU or external logic.
W25Q256JVEJQ TR Specifications
- Product attributes
- Attribute value
- Manufacturer:
- Winbond Electronics Corporation
- Series:
- SpiFlash®
- Package/Case:
- 8-WDFN Exposed Pad
- Packaging:
- Tape & Reel (TR)
- Product Status:
- Active
- Programmable:
- Not Verified
- Memory Type:
- Non-Volatile
- Memory Format:
- FLASH
- Technology:
- FLASH - NOR
- Memory Size:
- 256Mbit
- Memory Organization:
- 32M x 8
- Memory Interface:
- SPI - Quad I/O
- Clock Frequency:
- 133 MHz
- Write Cycle Time - Word, Page:
- 3ms
- Access Time:
- -
- Voltage - Supply:
- 2.7V ~ 3.6V
- Operating Temperature:
- -40°C ~ 105°C (TA)
- Grade:
- -
- Qualification:
- -
- Mounting Type:
- Surface Mount
- Supplier Device Package:
- 8-WSON (8x6)
W25Q256JVEJQ TR FAQ
1.How can I place an order for W25Q256JVEJQ TR through Aetrix?
Please submit a Request for Quotation (RFQ) for W25Q256JVEJQ TR on Aetrix. Our sales agent will provide a competitive quotation and guide you through the order confirmation once you accept the terms.
2.Are the price and stock information for W25Q256JVEJQ TR reliable?
The price and inventory of W25Q256JVEJQ TR are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for W25Q256JVEJQ TR is usually 5 days.
3.What payment methods are accepted for W25Q256JVEJQ TR?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for W25Q256JVEJQ TR transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for W25Q256JVEJQ TR?
W25Q256JVEJQ TR orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your W25Q256JVEJQ TR order is processed, you will receive an email with the shipment details and tracking number.
Note: Tracking information may take up to 24 hours to appear. Express delivery typically takes 3–5 business days.
5.How can I obtain technical support or documentation for W25Q256JVEJQ TR?
For technical support, including W25Q256JVEJQ TR datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your W25Q256JVEJQ TR requirements.
6.How does Aetrix verify that W25Q256JVEJQ TR is sourced from the original manufacturer or authorized distributors?
All W25Q256JVEJQ TR products on Aetrix are procured from qualified distributors and authorized channels. Our dedicated quality assurance team conducts strict verification, including traceability checks and, if necessary, third-party testing. This ensures that W25Q256JVEJQ TR meets industry standards.
7.What is the process for return or replacement of W25Q256JVEJQ TR?
All W25Q256JVEJQ TR units undergo pre-shipment inspection (PSI). If there is an issue with W25Q256JVEJQ TR, returns or replacements are accepted under the following conditions:
1.Quantity discrepancies, incorrect items, or visible external defects (such as breakage or corrosion), acknowledged by Aetrix.
2.The issue is reported within 90 days of delivery.
3.The W25Q256JVEJQ TR part is unused and in its original packaging.
Return procedure for W25Q256JVEJQ TR:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
W25Q256JVEJQ TR Tags
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M24C02-WMN6TP
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AT24C02C-XHM-T
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AT21CS01-STUM10-T
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M24C02-FMC6TG
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AT24CS02-SSHM-T
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AT24C04C-SSHM-T
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